First of all, my english is not excellent as i speak spanish, so some words or phrases may lead to confusion.
What occurs if the pump runs for some time (like an hour or two) with the multiport valve at closed or the suction valves closed???
On the other hand, what happens if small amounts of air enter constantly the pump, but not as much as for it to run dry???
Thanks for an answer
Pump running at abnormal conditions
First of all, my english is not excellent as i speak spanish, so some words or phrases may lead to confusion.
What occurs if the pump runs for some time (like an hour or two) with the multiport valve at closed or the suction valves closed???
On the other hand, what happens if small amounts of air enter constantly the pump, but not as much as for it to run dry???
Thanks for an answer
your multiport valve should be on filter which is normal.
what does your filter pressure read?
Do your return lines blow air bubbles?
You can lube/grease rubber O-ring under pump lid so it's air tight.
you can check rubber spider gasket in multiport valve it could be bad.
could be leak in suction side pipes going from skimmer to pump but you first need to check the other things.
Do you have a automatic cleaner like kreepy krauly or baracuda?
if so, unplug from skimmer & see if problem goes away. One of it's hoses could be leaking or the regulator the hose plugs into could be bad causing cavatation in pump.
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